Dyfyniad APA

Johnston, M. W., & Marshall, G. W. (2001). Act! Express. Boston, Mass: McGraw-Hill.

Dyfyniad Arddull Chicago

Johnston, Mark W., và Greg W. Marshall. Act! Express. Boston, Mass: McGraw-Hill, 2001.

Dyfyniad MLA

Johnston, Mark W., và Greg W. Marshall. Act! Express. Boston, Mass: McGraw-Hill, 2001.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.